129705

Names of 129705

• Cardinal: 129705 can be written as One hundred twenty-nine thousand, seven hundred five.

Scientific notation

• Scientific notation: 1.29705 × 10⁵

Factors of 129705

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 8655

Divisors of 129705

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 5 15 8647 25941 43235 129705
• Sum of all divisors σ(n): 207552
• Sum of proper divisors (its aliquot sum) s(n): 77847
• 129705 is a deficient number, because the sum of its proper divisors (77847) is less than itself. Its deficiency is 51858

Bases of 129705

• Binary: 11111101010101001₂
• Hexadecimal: 0x1FAA9
• Base-36: 2S2X

Squares and roots of 129705

• 129705 squared (129705²) is 16823387025
• 129705 cubed (129705³) is 2182077414077625
• The square root of 129705 is 360.1458038073
• The cube root of 129705 is 50.6196229619

Scales and comparisons

• 129,705 seconds is equal to 1 day, 12 hours, 1 minute, 45 seconds.
• To count from 1 to 129,705 would take you about twelve hours.

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 129705 cubic inches would be around 4.2 feet tall.

Recreational maths with 129705

• 129705 backwards is 507921
• The number of decimal digits it has is: 6
• The sum of 129705's digits is 24
• More coming soon!